From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
If the filesystem scan comes out clean or fixes all the problems, call
fstrim to clean out the free areas (if it's an ssd/thinp/whatever).
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
scrub/Makefile | 1 +
scrub/phase4.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
scrub/vfs.c | 23 +++++++++++++++++++++++
scrub/vfs.h | 2 ++
scrub/xfs_scrub.c | 26 +++++++++++++++++++++++++-
scrub/xfs_scrub.h | 1 +
6 files changed, 104 insertions(+), 1 deletion(-)
create mode 100644 scrub/phase4.c
diff --git a/scrub/Makefile b/scrub/Makefile
index c442c12..dace31e 100644
--- a/scrub/Makefile
+++ b/scrub/Makefile
@@ -41,6 +41,7 @@ inodes.c \
phase1.c \
phase2.c \
phase3.c \
+phase4.c \
phase5.c \
phase6.c \
phase7.c \
diff --git a/scrub/phase4.c b/scrub/phase4.c
new file mode 100644
index 0000000..c7874a6
--- /dev/null
+++ b/scrub/phase4.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 Oracle. All Rights Reserved.
+ *
+ * Author: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "list.h"
+#include "path.h"
+#include "workqueue.h"
+#include "xfs_scrub.h"
+#include "common.h"
+#include "scrub.h"
+#include "vfs.h"
+
+/* Phase 4: Repair filesystem. */
+
+/* Fix everything that needs fixing. */
+bool
+xfs_repair_fs(
+ struct scrub_ctx *ctx)
+{
+ bool moveon = true;
+
+ pthread_mutex_lock(&ctx->lock);
+ if (moveon && ctx->errors_found == 0)
+ fstrim(ctx);
+ pthread_mutex_unlock(&ctx->lock);
+
+ return moveon;
+}
diff --git a/scrub/vfs.c b/scrub/vfs.c
index 6afeca0..cc2f483 100644
--- a/scrub/vfs.c
+++ b/scrub/vfs.c
@@ -219,3 +219,26 @@ _("Could not queue directory scan work."));
free(sftd);
return false;
}
+
+#ifndef FITRIM
+struct fstrim_range {
+ __u64 start;
+ __u64 len;
+ __u64 minlen;
+};
+#define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */
+#endif
+
+/* Call FITRIM to trim all the unused space in a filesystem. */
+void
+fstrim(
+ struct scrub_ctx *ctx)
+{
+ struct fstrim_range range = {0};
+ int error;
+
+ range.len = ULLONG_MAX;
+ error = ioctl(ctx->mnt_fd, FITRIM, &range);
+ if (error && errno != EOPNOTSUPP && errno != ENOTTY)
+ perror(_("fstrim"));
+}
diff --git a/scrub/vfs.h b/scrub/vfs.h
index d565039..99da6b5 100644
--- a/scrub/vfs.h
+++ b/scrub/vfs.h
@@ -28,4 +28,6 @@ typedef bool (*scan_fs_tree_dirent_fn)(struct scrub_ctx *, const char *,
bool scan_fs_tree(struct scrub_ctx *ctx, scan_fs_tree_dir_fn dir_fn,
scan_fs_tree_dirent_fn dirent_fn, void *arg);
+void fstrim(struct scrub_ctx *ctx);
+
#endif /* XFS_SCRUB_VFS_H_ */
diff --git a/scrub/xfs_scrub.c b/scrub/xfs_scrub.c
index 786e2b3..81ec7e5 100644
--- a/scrub/xfs_scrub.c
+++ b/scrub/xfs_scrub.c
@@ -340,6 +340,20 @@ _("%sI/O rate: %.1f%s/s in, %.1f%s/s out, %.1f%s/s tot\n"),
return true;
}
+/* Run the preening phase if there are no errors. */
+static bool
+preen(
+ struct scrub_ctx *ctx)
+{
+ if (ctx->errors_found) {
+ str_info(ctx, ctx->mntpoint,
+_("Errors found, please re-run with -y."));
+ return true;
+ }
+
+ return xfs_repair_fs(ctx);
+}
+
/* Run all the phases of the scrubber. */
static bool
run_scrub_phases(
@@ -393,8 +407,18 @@ run_scrub_phases(
/* Run all phases of the scrub tool. */
for (phase = 1, sp = phases; sp->fn; sp++, phase++) {
/* Turn on certain phases if user said to. */
- if (sp->fn == DATASCAN_DUMMY_FN && scrub_data)
+ if (sp->fn == DATASCAN_DUMMY_FN && scrub_data) {
sp->fn = xfs_scan_blocks;
+ } else if (sp->fn == REPAIR_DUMMY_FN) {
+ if (ctx->mode == SCRUB_MODE_PREEN) {
+ sp->descr = _("Preen filesystem.");
+ sp->fn = preen;
+ } else if (ctx->mode == SCRUB_MODE_REPAIR) {
+ sp->descr = _("Repair filesystem.");
+ sp->fn = xfs_repair_fs;
+ }
+ sp->must_run = true;
+ }
/* Skip certain phases unless they're turned on. */
if (sp->fn == REPAIR_DUMMY_FN ||
diff --git a/scrub/xfs_scrub.h b/scrub/xfs_scrub.h
index d7b8900..9a09dcd 100644
--- a/scrub/xfs_scrub.h
+++ b/scrub/xfs_scrub.h
@@ -108,5 +108,6 @@ bool xfs_scan_inodes(struct scrub_ctx *ctx);
bool xfs_scan_connections(struct scrub_ctx *ctx);
bool xfs_scan_blocks(struct scrub_ctx *ctx);
bool xfs_scan_summary(struct scrub_ctx *ctx);
+bool xfs_repair_fs(struct scrub_ctx *ctx);
#endif /* XFS_SCRUB_XFS_SCRUB_H_ */
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